S9 6*9” Amplified Sub- Woofer Classic Magnet: 20 OZ Voice Coil: KSV1.5” 8 Layers Max Power: 450 Watts Frequency Response: 50-150 HZImpedance: 2+2 OHMS Sensitivity: 89dB/M.W Dimension (include box)35.7cm*27.4cm*13.5cmDimension (product itself)28.5cm*21cm*7.6cmWeight (include box)4.5kg Contact Us